Overview
The MAX3471EUA+T is a half-duplex transceiver designed by Analog Devices Inc./Maxim Integrated, specifically tailored for RS-485/RS-422 applications in lithium battery-powered systems. This device is notable for its ultra-low power consumption, drawing only 1.6µA (typical) from a 3.6V supply, making it ideal for battery-powered differential communications. The MAX3471EUA+T operates over a wide supply voltage range of 2.5V to 5.5V, ensuring reliable operation throughout the lifetime of a lithium battery.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage (VCC) | 2.5V to 5.5V | |
| Supply Current | 1.6µA (typical) | Receiver enabled, driver disabled, VCC = 3.6V |
| Operating Temperature Range | -40°C to +85°C (MAX3471EUA) | |
| Storage Temperature Range | -65°C to +160°C | |
| Driver Output/Receiver Input Voltage | ±10.5V | |
| Data Rate | Up to 64kbps | |
| Package Type | 8-pin µMAX |
Key Features
- Ultra-Low Power Consumption: Draws only 1.6µA (typical) from a 3.6V supply, making it suitable for lithium battery-powered systems.
- Wide Supply Voltage Range: Operates from 2.5V to 5.5V, ensuring reliable operation over the lifetime of a lithium battery.
- True Fail-Safe Operation: Guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when connected to a terminated transmission line with all drivers disabled.
- Reduced-Slew-Rate Drivers: Minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission.
- Internal Circuitry Protection: Prevents battery back-charging when driver outputs are enabled and pulled above VCC or below GND.
Applications
- Remote Meter Reading: Ideal for remote metering applications where low power consumption is critical.
- Battery-Powered Differential Communications: Suitable for various battery-powered communication systems.
- Level Translators: Can be used in level translation applications requiring low power and reliable operation.
Q & A
- What is the typical supply current of the MAX3471EUA+T?
The typical supply current is 1.6µA when the receiver is enabled and the driver is disabled at a 3.6V supply voltage.
- What is the operating temperature range of the MAX3471EUA+T?
The operating temperature range is -40°C to +85°C.
- What is the maximum data rate supported by the MAX3471EUA+T?
The device supports data rates up to 64kbps.
- What type of package does the MAX3471EUA+T come in?
The device is available in an 8-pin µMAX package).
- How does the MAX3471EUA+T handle fail-safe operation?
The device guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when connected to a terminated transmission line with all drivers disabled).
- What is the purpose of the reduced-slew-rate drivers in the MAX3471EUA+T?
The reduced-slew-rate drivers minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission).
- How does the MAX3471EUA+T protect against battery back-charging?
The device has internal circuitry that prevents battery back-charging when driver outputs are enabled and pulled above VCC or below GND).
- What are some common applications of the MAX3471EUA+T?
Common applications include remote meter reading, battery-powered differential communications, and level translation).
- What is the storage temperature range for the MAX3471EUA+T?
The storage temperature range is -65°C to +160°C).
- What is the maximum driver output/receiver input voltage for the MAX3471EUA+T?
The maximum driver output/receiver input voltage is ±10.5V).
